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Re: Sync question - Zookeeper - [mail # user]
...The guarantee when using "sync + read" and updates is that the read will see any update that completes before the sync starts (if the update starts after the sync it is concurrent and may be...
   Author: Alexander Shraer, 2013-11-05, 23:33
[expand - 1 more] - Re: Running Zookeeper in 2 machines - Zookeeper - [mail # user]
...yes, and more than that - its theoretically impossible to tolerate half or more failures in a completely asynchronous environment if you want to provide strongly consistent replicated storag...
   Author: Alexander Shraer, 2013-11-05, 22:42
[expand - 1 more] - Re: Growing a cluster - Zookeeper - [mail # user]
...Dynamic reconfiguration from/to an ensemble containing just one server is being developed in this JIRA: https://issues.apache.org/jira/browse/ZOOKEEPER-1691 but its not completely finished y...
   Author: Alexander Shraer, 2013-11-05, 16:06
[expand - 1 more] - Re: help! some questions about zk - Zookeeper - [mail # dev]
...Hopefully this should only hurt availability/liveness, not cause you to loose data. ZooKeeper will not allow you to issue any more updates before having again at least 3 servers. This of cou...
   Author: Alexander Shraer, 2013-10-22, 00:03
[ZOOKEEPER-1633] Introduce a protocol version to connection initiation message - Zookeeper - [issue]
...Currently the first message a server sends to another server includes just one field - the server's id (long). This is in QuorumCnxManager.java. This makes changes to the information passed ...
http://issues.apache.org/jira/browse/ZOOKEEPER-1633    Author: Alexander Shraer, 2013-10-11, 01:10
[ZOOKEEPER-1639] zk.getZKDatabase().deserializeSnapshot adds new system znodes instead of replacing existing ones - Zookeeper - [issue]
...Before the call to zk.getZKDatabase().deserializeSnapshot in Learner.java, zk.getZKDatabase().getDataTree().getNode("/zookeeper") == zk.getZKDatabase().getDataTree().procDataNode, which mean...
http://issues.apache.org/jira/browse/ZOOKEEPER-1639    Author: Alexander Shraer, 2013-10-08, 21:31
[expand - 1 more] - Re: Review Request 12983: ZOOKEEPER-1691 - Zookeeper - [mail # dev]
...This is an automatically generated e-mail. To reply, visit: https://reviews.apache.org/r/12983/#review26642    http://svn.apache.org/repos/asf/zookeeper/trunk/src/java/main/org/apa...
   Author: Alexander Shraer, 2013-10-03, 04:54
Re: avoiding the risk of starting ZooKeeper servers in the same ensemble with different transaction logs - Zookeeper - [mail # user]
...Some time in the past we were discussing adding a unique identifier for each ensemble in the config files and checking it. For example when a server tries to connect to the leader. I'm not s...
   Author: Alexander Shraer, 2013-09-27, 00:00
Re: Rolling upgrade from zookeeper 3.4.5 to - Zookeeper - [mail # user]
...Hi Deepak,  You'll have to first upgrade to 3.4.6 and then to 3.5.0. For more details take a look in the user manual linked from here https://issues.apache.org/jira/browse/ZOOKEEPER-166...
   Author: Alexander Shraer, 2013-09-17, 06:09
[expand - 2 more] - Re: Dynamically Adding nodes to ZK Ensemble - Zookeeper - [mail # user]
...You should start it as whatever you want it to be in the new configuration. In this case participant.  In fact if you start it as observer but try to add it to the ensemble as participa...
   Author: Alexander Shraer, 2013-08-20, 01:51
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